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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Automatic Transmission - ALLISON - Introduction (2 Of 2)) >> Repair Instructions >> Control Valve Body Cleaning and Inspection >> Clean and Inspect

Clean and Inspect

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  1. Clean all removed parts with volatile mineral spirits or other similar cleaning agent.
  2. Clean fluid passages by working a piece of soft wire through the passage and flushing with mineral spirits. Dry the passages with compressed air.
  3. Inspect valves for wear, nicks, or scratches. Remove minor imperfections with a soft stone or crocus cloth. Replace any damaged valves.
  4. Inspect springs for signs of overheating, permanent set, or wear. Replace suspect springs.
  5. Inspect mating surfaces for nicks, burrs, scratches, or foreign matter. Remove any defects with crocus cloth or a soft stone. Replace damaged parts.
  6. Inspect bores for wear, scratches, and grooves. Remove scratches and burrs with crocus cloth. Replace deeply grooved or scratched parts.
  7. Inspect threaded parts for burred or damaged threads. Remove burrs with a soft stone or fine file.
  8. Inspect threaded openings for damaged threads. Correct damaged threads with a correctly sized tap.